At a campaign rally in upstate New York on Thursday, the Democratic candidate was questioned by a climate activist who wanted to know whether the presidential candidate had accepted donations from the fossil fuel industry — and Clinton went off!

The former Secretary of State busted back at Eva Resnick-Day after the Greenpeace USA-affiliated activist openly questioned Clinton's financial backers, as seen in the video (above)!!!

Hillary's response is hard to hear with the music in the background, but she immediately drops her usual cool on the questioner and has nothing nice to say about Bernie Sanders' campaign apparently lying about her!